Susan recorded data on a student’s fidgeting behavior in the following way: She divided a 10minute recording period into 10-second intervals and recorded in each interval a "+" if the target behavior occurred at least once. The percentage of intervals of target behavior occurrence was about 45%. The data resulting are most likely to be an
A . accurate measure of inter-response times.
B . inaccurate measure of inter-response times.
C . overestimate of the occurrence of the behavior.
D . underestimate of the occurrence of the behavior.
Answer: C